Electric transmission of intelligence.



- I. KITSEB. ELECTRIC TRANSMISSION OF INTELLIGENCE.

APPLICATION FILED JULYS, 1911.

' Patented Jan. 23, 1912.

I. KITSEB. ELECTRIC TRANSMISSION OF INTELLIGENCE.

APPLICATION FILED JULY 3, 1911.

Patented Jan. 23, 1912 3 SHEETS-SHEET 2.

zNVENTOR.

W'ITINESSES:

I. KITSEE. ELECTRIC TRANSMISSION OF INTELLIGENCE.

APPLICATION FILED JULY 3, 1911.

Patented Jan. 23, 1912.

3 SHEETS-SHEET 3.

WITNESSES. 5M?

20 panymg drawings.

ISIDOR xrrsnn,

OF PHILADELPHIA, PENNSYLVANIA.

ELECTRIC TRANSMISSIQN OF INTELLIGENCE.

the following is a specification.

' teries at station My invention relates to an improvementin electric transmission of intelligence. "Its object to neutralize the inducing eflect of one circuit upon the other.

My invention is applicabletoaerial lines as well as cables, but-its greatadvai'itage is more apparent in systems wherein a number of circuits are providedwith one common sheath, such as aerial, underground or submarinecables.

To illustrate some of the forms my invention may take, I have recourse to the accomln these drawings, Figure 1 is a diagrammatic view ofa cable, such as is used for aerial or underground purposes, the different telegraphic lines inclosed in the cable grounded and provided with my invention. Fig. 2 is a diagrammat c view. of a submarine cable, the different telegraphic lines 1nclosed in said cable grounded an'd'provided with my invention. Fig. 3 is a diagrammatic view of a cable, phonic lines inclosed in said cable provided with one common metallic return and provided with my invention.

In Fig. 1, '1 is .the cable, the common sheath being for better understanding broken away at both terminals 2, 3,4, are the respective lines in this cable; 5, 6, 7, the bat- X of the cable; 8, 9, 10, the transmitting keys at the samestation; 11, 12, 13, the receivers at this station. The keys, and receivers at thestation X are numbered alike with the exception that the numbers carry the designation (1.

14 is' the common ground connection-for one terminal of the line and 1 1 the ground connection for the second terminal of the line.

Each line is provided with my anti-induction device comprising an iron core, a helix or coil connected to the line to be protected and a second helix or coil inserted in the common ground circuit. Theinductive de-- vices are-designated. respectively by'the numerals 15, 1 17.

I will describe here the function of one of Specification of Letters Patent.

the difierent tele 1 15 induce a pulse inthe second coil of said Patented Jan. 23, 1912.

Application filed July 3, 1911. Serial No. 636,680.

these anti-induction devices, it being under- I stood that the function of the remaining devices are similar, and I take as su'ch example the device 15, one helix of which is connected to the line 2. When all keys are at rest. the flow of current through the lines [will be a constant and steadyone and, therefore, no inductive influence'will" take place from one line to. the other. But let us suppose that the operator at station X of the line 3 de-. sires to transmit a message and, thdlge'fore, operates his key in the usualmanner, transmitting a short impulse to denote a dot and a longer impulse to denote a dash. The variation of this current-flow willin'duce pulses in the neighboring wire 2 and these impulses will flow in the opposite direction from. the flow of the current in line 3. As the flattery (5 connected to lineB indicates, the flow of the current when the key is closed willbe in the direction of the unfeathered short arrow and the inductive impulse due to the flow of this current will be in the line 2 in the direction of the short ,feathered arrow. But at the same time that this impulse is induced in line 2, the current will flow in the coil'connected to the common ground of the device 15 in thefdireetion of the long unfeathered arrow and will induce a current impulse in the directionof the'long feathered arrow, 2'. e. in a direction opposite. to the direction of the induced impulse: denoted by the'short feathered arrow. The ceasing of the flow] of the current through wire'3 will inducein' the wire 2 an impulse opposite Yto-the formerinduced impulse and so will the'ceasing of the flow of the current in the coil of the device device also-in opposition to the first impulse.-

;It. is thereby seen that if the coils' are care- '85 the coil of this device connected to line 2 in fully adjusted as to their inducing proper ties, the device 15 can be so arranged thatthe impulsetinduced through the flow of the current in the line' 3 can be entirely compen; sated or neutralize v In Fig. 2, which represents one partof a. duplexing system of two submarine lines of transmission ;v Lis the cable;2, 3, the lines of transmission; 20 the duplexing bridge of line 2; 21 the duplexing bridge of line 3; 22 the artificial line of line 2 and 23 thehrtificial line of line 3. 2 & is the transmit ting arrangement as now usedfor line 2 and 25 the transmitting arrangement .for line 3.

26 is the anti-inductive device for line 2- 45 boring lines of'transmission inclosed in a cable, a separateand 1ndlV1d11al anti-induc-" and 2 7 the anti-inductive device for line 3. I

artificial cable, and a neutralizing coil is provided for the real line as Well as the arti ficial line. The function of the coil connected to the common ground is the same as the function of the coil described in Fig. 1.

In Fig. 3; l'is the cable; 2, 3, 4, the lines of transmission, each of the two terminals of each line being provided With a telephonic transmitting device and a receiving device 31. All three lines are connected to the common metallic return 35. The neutralizing coils'are connected in multiple are as to each other and return. The function of these devices is the same as the function of the devices as described in Fig. 1, and they are designated respectively by the numerals 32,

and 34:. r 1

I have illustrated in this figure each telephonic circuit as being provided with its individual battery and placed the receiver directly in the line, but it is obvious that each of the 'telephoniccircuits may be so i connected and provided with such devices as I so comprising a number of lines of transmission, means to neutralize the inducing effect inclosed in said cable.

llne. v.

Having now described'my invention, What I-claim as new and desire to secure by Letters Patent is: g 7

l. In'combination with an electricpcable to make out of these circuits a common trunk of one line upon the other line, saidimeans comprlsmg a'magnetic corefor eaoh of sald lines, a coilfor eachfof sai'dlcores connectedto the lines to be neutralized, a second coil for each of said cores, nectedin the common 2. In combination with a number of neighe tive device foreach of'said lines, each of 'said anti-inductive devices comprising a separate iron core,'one coilof said core con nected 1n the line and the second coil of said a core connected in the common return;

said second coil con-g return of the ,linese.

-3. In combinationwith a series of neighboring lines of transmission inclosed in a cable, a common return for all of said lines, each ofsaid linesprovided with ,a separate anti-inductive device, each of these devices comprising an individual core, one 0011 thereof connected to one of the lines of transmission and the second coilthereof connected, in the common return.

4. In combination with a cable including two or more lines of transmission, each line provided with' an artificial line, means to neutralize the inductive effect of one line upon theoth'enfsaid means comprising/for each line a magnetic core anda series of coils for-saidcore, one coil connected to the line of transmission, one coil; connected to the artificial line and one coil connected to the common r'eturn. i

5. Means to neutralize the inductive effect of one linelof transmission upon the other line of transmission, said means comprising a common ground'for said lines, an inductive device for each of the lines to be neutralized and each of said devices comprising a closed magnetic circuit and two coils therefor, one coilconnected to the line to be neutralized and theother'coilconnected in the common ground. r

6. Means to neutralize the inductive effect of neighboring lines of transmission, said means comprising an inductive device, one COll connectedto one pole of the source of current and line of transmission to be neutralized, respeotively, the second =coil connected to the oppositepole of'the source of current and common return.

7. Means to neutralize the inductive effect .of neighboring lines of transmission pro-- Vided each with an artificial line,said' means comprising an inductive device, three coils for said device, one of said coils connected to the line to be'neutralized, the second coil connected, to its artificial line and the third coil connected to the common return. I

In testimony whereofIaflix my signature in presence oftwo-witnesses. I

' Witnesses; EDITH R. S'rILLEY,

Copies of this patent may be obtained for five cents eacli, b y a dilressing the commissioner of Patents.

I a ,W h ns qn, ,6? a. I

l VISID'OR KITSEE. 

